BogoMIPS (Bogus MIPS) are the result of a loop run during kernel initialization. The value is used to determine timing for certain other parts of the kernel. The value is determined once and only once during startup, so in a shared environment such as a mainframe, or when running on Hercules or VMWare, the chances that you'll get the same value from one IPL to another are exceedingly slim. Since they are only a very small subset of the instructions available to any given architecture, cross-architecture comparisons are worse than bogus. I suspect that Linus and company regret ever printing the number out since it's generated so many questions over the years.
Mark Post -----Original Message----- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of James Melin Sent: Tuesday, August 24, 2004 10:42 AM To: [EMAIL PROTECTED] Subject: Re: Linux390 LPAR - CPU info -snip- Perhaps someone more learned than I can explain the bogomips number and what it is used for, but I wouldn't say it is a valid representation of the processor 'speed'. -J ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
